[SOLR-2580] Create Components to Support Using Business Rules in Solr

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Fix Version/s: 4.5, 6.0
• Component/s: Rules
• Assignee: Grant Ingersoll
• Reporter: Tomas Eduardo Fernandez Lobbe
• Created: 08/Jun/11 14:36
• Updated: 09/May/16 18:44
• Resolved: 30/Jul/13 16:29

Description

The goal is to be able to adjust the relevance of documents based on user defined business rules.

For example, in a e-commerce site, when the user chooses the "shoes" category, we may be interested in boosting products from a certain brand. This can be expressed as a rule in the following way:

rule "Boost Adidas products when searching shoes"
when
$qt : QueryTool()
TermQuery(term.field=="category", term.text=="shoes")
then
$qt.boost("

{!lucene}brand:adidas");
end

The QueryTool object should be used to alter the main query in a easy way. Even more human-like rules can be written:

rule "Boost Adidas products when searching shoes"
when
Query has term "shoes" in field "product"
then
Add boost query "{!lucene}

brand:adidas"
end

These rules are written in a text file in the config directory and can be modified at runtime. Rules will be managed using JBoss Drools: http://www.jboss.org/drools/drools-expert.html

On a first stage, it will allow to add boost queries or change sorting fields based on the user query, but it could be extended to allow more options.

Issue Links

• is related to: SOLR-1520 QueryElevationComponent does not work when unique key is of type 'sint'
• is related to: SOLR-1730 Solr fails to start if QueryElevationComponent config is missing
• is related to: SOLR-2951 Augment QueryElevationComponent results
• is related to: SOLR-2949 QueryElevationComponent does not fully support distributed search
• is related to: SOLR-2950 QueryElevationComponent needlessly looks up document ids
• relates to: SOLR-2965 Support Landing Pages/Redirects